Method and system for conducting a transaction using a...

Details Method and system for conducting a transaction using a... Method and system for conducting a transaction using a...

G - Physics

06

Q

G06Q 20/00 (2006.01) G07F 7/10 (2006.01) G07F 7/12 (2006.01)

Patent

CA 2479602

A proximity device (102) transmits a first dynamic authentication value contactlessly to a terminal. The first authentication value is included in a discretionary data field of message data arranged in an ISO Track 1 and/or ISO Track 2 format. Message data is sent from the terminal to an issuer (110). The issuer separately derives a second authentication value and compares it with the first authentication value.

Selon l'invention, un dispositif de proximité transmet sans contact une première valeur d'authentification dynamique à un terminal. La première valeur d'authentification est incluse dans un champ de données discrétionnaire de données de message en format ISO Track 1 ou ISO Track 2. Les données de message sont envoyées du terminal à un émetteur. L'émetteur calcule séparément une deuxième valeur d'authentification et la compare à la première valeur d'authentification.

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